HP ProBook 6550b Notebook PC HP ProBook 6550b Notebook PC https://www.techadvisor.co.uk/review/budget-laptops/hp-probook-6550b-review-3241922/ Product Code: WD698EA The HP ProBook 6550b is a 2.6kg, 15.6in laptop designed for business users who want something solidly built and fully featured. The HP ProBook 6550b has everything from a built-in DVD burner to a FireWire port, and you even get ... The HP ProBook 6550b's 6-cell, 55 Watt-hour battery lasted 2hr 12min in our rundown test, in which we disable power management, enable Wi-Fi, maximise the screen's brightness and loop an Xvid-encoded video. This is only two minutes off what the ProBoo...